Figure 6.

Current/voltage relations of whole-cell inward K⁺ currents in adaxial (A) and abaxial (B) guard cell protoplasts in the absence or presence of ABA in the bath solution. K⁺ current amplitudes were expressed as the current per unit cell capacitance to correct for variation resulting from different cell sizes. The number of replicates of whole-cell recordings with adaxial guard cells were 7 (Control), 11 (10 μm ABA), and 9 (40 μm ABA). The replicates of whole-cell recordings with abaxial guard cells were 7 (Control), 7 (10 μm ABA), and 13 (40 μm ABA). Each data point is the mean ± se.